This isn't the first time tech companies have stood up for gay rights. Several of them marched in last year's parade. And back in 2011, many of these companies took part in the "It Gets Better" anti-bullying video campaign.

But not everyone was thrilled that tech companies were marching in the parade. Tenant rights activists hopped up on the Google float and shouted "eviction equals death." (That's the third time people have protested against Google in a week: at Google I/O, twopeople interrupted the keynote to protest.)